7920700 has 36 divisors (see below), whose sum is σ = 17377360. Its totient is φ = 3133440.

The previous prime is 7920677. The next prime is 7920707. The reversal of 7920700 is 70297.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7920707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9916 + ... + 10684.

Almost surely, 2^7920700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7920700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8688680).

7920700 is an abundant number, since it is smaller than the sum of its proper divisors (9456660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7920700 is a wasteful number, since it uses less digits than its factorization.

7920700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886 (or 879 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 25.

The square root of 7920700 is about 2814.3738202307. The cubic root of 7920700 is about 199.3369710587.

Adding to 7920700 its reverse (70297), we get a palindrome (7990997).

The spelling of 7920700 in words is "seven million, nine hundred twenty thousand, seven hundred".